A portion of a stone quarry here collapsed, trapping some labourers under the rubble in Sonbhadra on Sunday, officials said.

Teams of the NDRF and SDRF have left Mirzapur to carry out rescue operations at the site in Billi Markundi village, they said, PTI reported.

The exact number of people trapped is still unknown, the DM said.

(This is a breaking news)

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